Finding the Fourth Proportional to 3,388.81, 5,082.69 and 923.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388.81 : 5,082.69 = 923.83 : x
2. Step 2: Convert to fraction form
   3,388.81/5,082.69 = 923.83/x
3. Step 3: Cross multiply
   3,388.81x = 5,082.69 × 923.83
4. Step 4: Simplify right side
   3,388.81x = 4,695,526.49
5. Step 5: Solve for x
   x = 4,695,526.49/3,388.81
6. Step 6: Final answer
   x = 1,385.60